Ignite Divine Ire of Holy Lightning Elementalist

Weapon - The best in slot will be Grace of the Goddess. Not even a mirror wand can beat this, the sheer amount of damage this weapon provides, makes it irreplaceable. Try getting a well rolled one and use Tempering orbs to get a Physical Enchant

Helmet - The Dark Monarch (Summoned Golems) is the best in slot, since we're scaling our damage via golem numbers, this is irreplaceable item for this slot. Make sure you're getting the golem one.

Body Armor - Incandescent Heart is my personal choice here, offering a good balance between damage and survivability. Focus on getting a max rolled one for "Gain 20% of elemental damage as extra chaos" as mentioned above we have A LOT of elemental damage, and gaining 20% of that as chaos, is insane. It also offers great defenses with decent ES rolls and Armour rolls. Additionally taking 20% of elemental damage from hits as chaos, basically means you take 25% less damage from ele hits because we're going Chaos Inoculation.

Rings - Lost Unity, no way to replace this item.

- Circle of Ambition (Purity: Buff Effect) This will be your 2nd option for the ring slot. Try getting one with Herald of Purity buff effect, 10% increased mana reservation efficiency of herald skills, and the other 2 mods can be whatever. If you can get a ring with 2 herald buff effects, preferably ash and purity, that would be insane. IT MUST HAVE FLAMMABILITY CURSE IMPLICIT!!!!!!!!!!

Amulet - The Primordial Chain with a +1 curse corruption implicit. Anoint Dirty Techniques

Belt - Mageblood for huge quality of life and survivability. If this is out of your budget, focus on capping your resistances

Shield - A rare crafted shield with as much Energy Shield as you can and a +1 to level of all physical spell skill gems prefix. For the suffixes, try to get INT and resistances.

Gloves - Warlock Gloves with as much ES as possible, DEX, INT and 1 resistance. I bought mine with the fractured DEX, and spammed Deafening Essences of Woe until I hit good prefixes, then eldritch currency the suffixes.

Boots - Warlock Boots with lots of movement speed, lots of Energy Shield, INT and resistances. I bought mine with the 35% fractured MS, then spammed Essences of Woe just like on the gloves until I hit T1 % ES, then finished the suffixes with eldritch currency.

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For the Jewels, you want 3 large 8 passive cluster jewels with Primordial Bond. The other nodes don't matter as they are useless. I went with Primordial Bond and Renewal as this combo gives me Primordial Bond on the bottom of the cluster, and Renewal on the top, so I can get more stats on my way to the jewel slot.

Your Forbidden Flesh and Flame combo will be what's the cheapest. When i started Bastion of Elements was the cheapest, so I went with that. It's mandatory you take Liege of the Primordial and Bringer of Ruin, so just swap around as your budget permits.

Melding of the Flesh will allow us to bring our max resistances as high as we can. For me, it's 84%, but it can go higher with more investment.

You want to use 2x Primordial Eminence and 1x The Anima Stone for more golem buff effect and an additional golem.

I'm using 4 Megalomaniacs that give me Primordial Bond. Other useful nodes could be: Fan the Flames Molten One's Mark Endbringer Heraldry Enduring Composure Prismatic Dance Prismatic Carapace Prismatic Heart, basically anything that get your max res even higher.

The Balance of Terror with Elemental Weakness is great for damage, basically giving you up to 40% of physical damage as a random element if you've cast Elemental Weakness in the past 10 seconds. So just spam Elemental Weakness on bosses or once every 10 seconds, and you're fine.

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Grafts - I'm using 1 Draining Eshgraft which Sap's the enemy, and giving me 16% increased max ES, and 1 Flamecaller Xophgraft that gives me the mod "Damaging Ailments deal damage 10% faster" while covering the enemies in Ash, albeit, it's not very reliable.